Your jawbone is the hardest bone in your body. 你的下颌骨是身体里最坚硬的骨头。
Her schedule includes a speech therapist because the nerves on the right side of her face, as well as her jaw bone and lips, were damaged. 她的日程安排中包括拜访一名语言治疗专家，因为除了下颌骨和嘴唇之外，她面部右侧的神经也受到了损坏。
英汉词典
